This solution should help me explain my desire

RepositoryLibrary/LocalRepository.cs

@@ -0,0 +1,17 @@
+using SharedLibrary.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace RepositoryLibrary
+{
+    public class LocalRepository : IRepository
+    {
+        public async Task<object> Lookup()
+        {
+            throw new RepositoryException();
+        }
+    }
+}